I've had the Sharp LC-60LE600U for a few days. The picture looks great to me, but I don't have any calibration equipment. The audio is not good at all, but if you're using a surround sound system 100% of the time that's not a concern. Unless you have the same issue that I have where the optical out doesn't work properly (see other post). I'm still trying to determine if it's a software bug or an issue with my TV, but I'm seriously considering exchanging it for the LC-60LE640U which is also currently under $1700 at all major retailers. The 640 model has smart TV features and built-in wifi, which I don't care about, but the 600 model has stripped down settings and seems to be a little too budget for my taste.
EDIT: Sharp said there is no fix for the issue with the optical audio output. So the built-in speakers are terrible and the only audio output doesn't work. Unless you plan to route all of your sources through a surround sound system, do not waste your time with the LC-60LE600U.